Twisting traveler for twisting rings



Aug. 19, 1930.

H. J. MURPHY TWISTING TRAVELER FOR TWISTING RINGS Filed Jan. 9, 1930 A TTORNEYS.

Patented Aug. 19, 1930 UNITED STATES PATENT OFFICE HENRY J'. MURPHY, OF COLUMBUS, GEORGIA, ASSIGNOR TO BIBB MANUFACTURING COMPANY, OF MACON, GEORGIA, A CORPORATION OF GEORGIA TWIS'IING TRAVELER FOR TWISTING RINGS Application filed January 9, 1930. Serial No. 419,658.

This invention relates to improvements in twisting travelers used on twisting rings, such as are employed in spinning machines. In devices of this character the traveler revolves very rapidly around the ring and much \trouble has been experienced in obtaining a proper lubrication of the bearing parts of the two members. In ordinary practice, preliminary to a twisting operation, a small 10 quantity of a lubricant of thick consistency is smeared on the inner face of the ring. As the traveler revolves around the ring it spreads the lubricant over the inner face of thering and as the bearing parts become heated by friction the lubricant is melted and tends to flow by gravity toward the lower part of the two members. This results in an excess of lubricant between the lower bearing surfaces and too little between the upper surfaces. This uneven and changing distribution of the lubricant causes a variation in the frictional engagement between the traveler and the ring with a consequent variation in the tension imposed on the yarn as the traveler revolves around the ring. The varying tension on the yarn being twisted results in a lack of uniformity in the twisted product.

The uneven and varying distribution of the lubricant between the bearing surfaces of the ring and traveler has been avoided to some extent by forming a longitudinal groove or pocket in the'face of thetraveler that contacts with the ring. As the traveler revolves itsmooths the smeared lubricant over the inner face of the ring and the pocket soon becomes filled with lubricant scraped by the edges of the pocket from the ring. As the traveler revolves very rapidly it soon becomes heated from the friction and the lubricant melts in the pocket. -As the traveler continues to revolve the melted grease is fed from the pocket onto the ring and after a comparatively short period of theoperation only the lower part of the pocket contains any of the lubricant, which is distributed between the lower parts of the traveler and ring, the upper parts becoming more or less dry. This lack of lubricant between the upper parts tends to increase the friction between the two members and results in an increase of the tension applied to the yarn.

One of the objects of the present invention is to provide means whereby the upper hearing surfaces of the ring and traveler are maintained in a lubricated condition as well as the lower surfaces. To this end there is formed in the upper bearing surface of the traveler a series of grooves that extend transversely and obliquely across the surface from a common point. In the series are upper and lower oblique grooves diverging in the direction toward which the traveler moves, and as intermediate transversegroove extending parallel with the path of travel of the traveler. In the aggregate, this series of grooves covers a path of considerable vertical width in the upper bearing surface of the traveler. As the traveler revolves, on the ring the grooves serve to engage and spread the lubricant between the upper bearing faces of the two members; also, the grooves collect a considerable part of the lubricant to be fed gradually to the bearing surfaces during the twisting operation. The direct distributing action of the grooves is between the upper bearing surfaces, hut the heat generated by the friction of the traveler rapidly revolving on the ring melts the lubricant contained in the grooves to spread on the upper bearing sur faces; by gravity, the melted lubricant flows downwardly between the lower bearing surfaces, thereby insuring complete lubrication of the mutual contacts of the two members.

The means employed for distributing the lubricant are particularly described hereinafter, pointed out in the appended claims and illustrated by the accompanying drawings.

In the accompanying drawings, in which similar reference characters designate corresponding parts, v

Figure 1 is a plan view of the twister-ring. Fig.2 is a vertical section on the line 2-2 of Fig. 1.

Fig. 3 is a perspective view, showing the traveler mounted on the ring.

Fig. 4 is aside elevation of the traveler,

showlng the grooved inner face of the traveler.

Fig. 5 is an edge view of the traveler.

Referring to the drawings in detail, the ring 10 and the traveler 11 o the twister couple are of the usual construction as to .their general formation. The traveler comprises the intermediate vertical part 12 and the upper and lower hooks 13 and 14, respectively. The intermediate part 12 is slightly convex on its inner face to provide in a vertical direction a slightly "rounded bearing surface.

While the traveler can be easily mounted on and dismounted from the ring and loosely fits the same, yet the hooks hold it securely in engagement with the ring in a twisting operation. In a twisting operation the traveler rapidly revolves around the ring in the direction indicated by the arrow 15, Fig. 3. In the movement of the traveler around the ring, the principal points of contact and of wear with the ring are at the crown of the slightly convex intermediate part 12 and at the bends 16 and 17 where the upper and lower hooks 13 and 14, respectively, turn from the upper and lower ends of the intermediate part.

In the inner upper face of the intermediate part 12 of the traveler is a series of grooves, including the horizontal groove 18 and the oblique grooves 19 and 20, leading from a common recess 21 adjacent the rear edge of the traveler. The groove 18 extends'transversely across the traveler just above the crown of the convexity of the intermediate part 12; the oblique grooves 19 and 20, respectively positioned above and below the horizontal groove 18, extend diagonally across the traveler .to diverge, toward the front edge of the traveler.

Preliminary to a twisting operation, the operator-smears a small quantity of lubricant on the upper part of the inner face of the ring 10. When the operation is started, the traveler 11 revolves rapidly around the ring 10 in the direction indicated by the arrow 15 in Fig. 3. As the traveler revolves it engages the lubricant and during the first few revolutions spreads it roughly over the inner face of the ring. As the traveler continues to revolve the heat generated b the friction between the relatively mova le members melts the lubricant so that the latter flowsof the lubricant is collected downward on the inner face of the ring. The moving traveler spreads the fluid lubricant over the inner face of the ring) and'a portion y the grooves 18, 19, 20 and is held as a reserve supply of the lubricant. During the forward movement of the traveler the lubricant in the grooves, due to its tendency to adhere to the adjacent face of the ring, gradually works to the rear of the traveler into the recess 21, which opens through the rear edge-of the "traveler. The lubricant escapes from the rear-of the recess and adheres in a narrow band to the :face of the ring just above the path traveled by the crown of the convex intermediate part 12 of the traveler, where most of the wear occurs. Owing to its fluid condition, the lubricant in the deposited band flows downward over the face of the ring where the latter contacts with the convexity of the traveler. Owing to the loose engagement between'the ring and traveler, there is a slight vertical play of the latter on the former; consequently, the grooves and recess in the traveler do not always follow exactly the same track around the ring. Consequently, the lubricant in the path of the traveler is constantly taken up and redistributed by the grooves. The fluidity of the lubricant is such that sufficient fiows'by gravity from the zone of the grooves to lubricate the lower part of the ring where it contacts with the lower part of the traveler, particularly at the contact between the ring and the bend 17 in the traveler. As the lubricant is initi ally applied to the upper part of the inner face of the ring-the operator ordinarily applies the lubricant by taking a small portion on his fingers and scrapes it off over the edge of the ring-there is sufiicient retained to lubricate the contact between the upper part of the ring and the bond 16 in the upper part of the traveler. As the traveler revolves around the ring, the groove 18 has a tendency to check the downward flow of the fluid lubricant on the ring, groove 20 has a tendency to direct the flow downward, and the groove 19 has a tendency to direct the flow upward.

What I claim is:

1. A traveler for twister rings comprising an intermediate part and :hooks at the extremities of the intermediate part, said intermediate part having a plurality of lubricating grooves extending transversely across its inner face.

2. A traveler for twister rings comprising an intermediate part and hooks at the extremities of the intermediate .part, said intermediate part having a recess in its inner face adjacent to the rear edge thereof, and a plurality of lubricating grooves leading from the recess across the inner face of the intermediate part.

3. A traveler for twister rings comprising an intermediate part and hooks at the extremities of the intermediate part; said intermediate part having a plurality of lubricating grooves extending transversely across its inner face and diverging from the rear edge of the intermediate part toward the front edge thereof.

4. A traveler for twister rin 5 comprising an intermediate part and hoo s at the extremities of the intermediate part, said intermediate part having a recess in its inner face adjacent to the rear edge thereof, and having a plurality of lubricating grooves extending transversely across its inner face from the recess and diverging toward the front edge of the inner face.

'5. A-tra-veler for twister rings comprising an intermediate part and hooks at the extremities cf the intermediate part, said intermediate part having a plurality of lubricating grooves extending across its inner face with an up er groove upwardly inclined from the rear e ge of said inner face toward the front edge thereof and with a lower groove declined from the rear edge of said inner face toward the front edge thereof.

6. A traveler for twister rings comprising an intermediate part and hooks at the extremities 0f the intermediate part, said intermediate part having a plurality of lubricating grooves extending across its inner face, One of said grooves being horizontally disposed and other grooves being obliquely disposed above and below the horizontal groove said obliquely disposed grooves communicating with the horizontal groove adjacent to the rear edge of said inner face and diverged toward the front edge of the inner face.

7. A traveler for twister rings comprising an intermediate part provided with a convex inner face providing a longitudinally round ed bearing surface, and books at the extremities of the intermediate part said intermediate part having a plurality of lubricating grooves extending transversely across its inner face and in the upper part of the longitudinally rounded bearing surface.

In testimony whereof I aflix my signature.

, HENRY J. MURPHY. 

